He’s been called the first man "to boldly go where no man has been before." Or, at least, no Englishman. Captain James Cook explored and mapped Australia and New Zealand, and became the model for Captain James T. Kirk of Star Trek fame.

In many places around the world, renewable energy technologies are already cheaper than fossil fuels. In his new book, "The Great Transition," Lester Brown, renowned environmental thinker and writer, says the great energy transition may be complete much sooner than you think.

Despite growing evidence that the earth's climate is changing, many people remain skeptical. This denialism is often seen as a political response to the issue, but some mental health experts in Australia say it can also be a beneficial coping mechanism.

Australia has had a rash of wildfires caused by unseasonably hot and dry weather. Scientists say the risk of fires is growing with climate change, but the country's new prime minister says they're just a normal part of life down under.

Floods, wildfires, droughts and heat waves have struck Australia in recent years, leaving survivors traumatized. With more extreme weather predicted as the earth warms up, mental health experts are seeking ways to prepare the public emotionally.

Rumors are flying that a new toad that has shown up in a part of Madagascar can kill people and even cows. It's not true, but the imported amphibians could mean big trouble for what's left of the island's unique plants and animals.